/* STEMSphere v11 — deep lesson content engine */
.ss-v11-depth-strip{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:14px 16px;border:1px solid var(--ss-border);border-radius:16px;background:linear-gradient(135deg,rgba(108,77,246,.08),rgba(24,185,129,.07));margin-top:16px}.ss-v11-depth-strip p{margin:2px 0 0;color:var(--ss-muted);font-size:.84rem}.ss-v11-depth-status{display:flex;align-items:center;gap:8px}.ss-v11-depth-status .dot{width:10px;height:10px;border-radius:50%;background:var(--ss-yellow);box-shadow:0 0 0 5px rgba(255,199,58,.13)}.ss-v11-depth-status.published .dot{background:var(--ss-green);box-shadow:0 0 0 5px rgba(24,185,129,.13)}
.ss-v11-hook{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(108,77,246,.09),rgba(44,140,255,.07),rgba(255,199,58,.08))}.ss-v11-hook:after{content:"?";position:absolute;right:20px;bottom:-30px;font-size:9rem;font-weight:950;color:rgba(108,77,246,.07);line-height:1}.ss-v11-hook .hook-copy{font-size:1.08rem;line-height:1.75;max-width:850px}.ss-v11-why-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}.ss-v11-why-card{padding:18px;border-radius:18px;border:1px solid var(--ss-border);background:var(--ss-surface-2)}.ss-v11-why-card strong{display:block;margin-bottom:7px}.ss-v11-why-card p{margin:0}
.ss-v11-vocab-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.ss-v11-vocab-card{min-height:148px;padding:17px;border:1px solid var(--ss-border);border-radius:18px;background:var(--ss-surface-2);cursor:pointer;position:relative;transition:.2s transform,.2s box-shadow}.ss-v11-vocab-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(31,26,77,.08)}.ss-v11-vocab-card .term{font-weight:950;font-size:1.03rem}.ss-v11-vocab-card .meaning{margin-top:12px;color:var(--ss-muted);opacity:.13;filter:blur(4px);transition:.2s}.ss-v11-vocab-card.revealed .meaning{opacity:1;filter:none}.ss-v11-vocab-card small{position:absolute;right:13px;bottom:10px;color:var(--ss-muted);font-weight:800}
.ss-v11-deep-steps{display:grid;gap:12px}.ss-v11-deep-step{display:grid;grid-template-columns:52px 1fr;gap:14px;align-items:start;padding:17px;border-radius:18px;border:1px solid var(--ss-border);background:var(--ss-surface-2)}.ss-v11-deep-step .n{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;font-weight:950;background:linear-gradient(135deg,var(--ss-purple),var(--ss-blue));color:#fff}.ss-v11-deep-step h3{margin:1px 0 7px}.ss-v11-deep-step p{margin:0}.ss-v11-deep-step .example{margin-top:9px;padding:10px 12px;border-radius:12px;background:rgba(24,185,129,.08);font-size:.9rem}
.ss-v11-worked{background:linear-gradient(135deg,color-mix(in srgb,var(--ss-blue) 7%,var(--ss-surface)),var(--ss-surface))}.ss-v11-worked-question{font-size:1.02rem;padding:14px 16px;border-radius:15px;background:var(--ss-surface-2);border-left:4px solid var(--ss-blue)}.ss-v11-worked-steps{counter-reset:step;display:grid;gap:9px;margin:15px 0}.ss-v11-worked-step{display:none;padding:13px 15px;border:1px solid var(--ss-border);border-radius:14px;background:var(--ss-surface-2)}.ss-v11-worked-step.show{display:block}.ss-v11-worked-step:before{counter-increment:step;content:"Step " counter(step);display:block;font-size:.72rem;font-weight:950;color:var(--ss-purple);text-transform:uppercase;letter-spacing:.08em;margin-bottom:5px}.ss-v11-model-answer{margin-top:14px;padding:15px;border-radius:14px;background:rgba(24,185,129,.09);border:1px solid rgba(24,185,129,.18)}
.ss-v11-mistake-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.ss-v11-mistake{padding:17px;border-radius:18px;border:1px solid rgba(239,97,97,.2);background:linear-gradient(135deg,rgba(239,97,97,.07),var(--ss-surface));cursor:pointer}.ss-v11-mistake .bad{font-weight:900}.ss-v11-mistake .fix{display:none;margin-top:11px;padding-top:11px;border-top:1px dashed var(--ss-border);color:var(--ss-muted)}.ss-v11-mistake.revealed .fix{display:block}
.ss-v11-exam-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.ss-v11-exam-card{padding:17px;border-radius:18px;border:1px solid var(--ss-border);background:var(--ss-surface-2)}.ss-v11-exam-card span{font-size:1.5rem}.ss-v11-exam-card strong{display:block;margin:8px 0}.ss-v11-memory-chain{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:16px 0}.ss-v11-memory-node{padding:10px 13px;border-radius:999px;background:rgba(108,77,246,.09);border:1px solid rgba(108,77,246,.15);font-weight:850}.ss-v11-memory-arrow{color:var(--ss-muted);font-weight:950}.ss-v11-memory-phrase{padding:16px 18px;border-radius:16px;background:linear-gradient(135deg,rgba(255,199,58,.14),rgba(108,77,246,.07));border:1px solid var(--ss-border);font-weight:800;line-height:1.6}
.ss-v11-challenge{background:linear-gradient(135deg,rgba(255,199,58,.1),rgba(239,97,97,.05),var(--ss-surface))}.ss-v11-challenge-prompt{font-size:1.08rem;font-weight:800;line-height:1.65}.ss-v11-reveal{display:none;margin-top:13px;padding:14px 16px;border-radius:14px;background:var(--ss-surface-2);border:1px solid var(--ss-border)}.ss-v11-reveal.show{display:block}.ss-v11-source-note{margin-top:12px;font-size:.78rem;color:var(--ss-muted)}
.ss-v11-diagram{padding:18px;border-radius:20px;border:1px solid var(--ss-border);background:radial-gradient(circle at 15% 20%,rgba(88,200,255,.13),transparent 24%),radial-gradient(circle at 86% 78%,rgba(24,185,129,.12),transparent 25%),var(--ss-surface-2)}.ss-v11-diagram-title{font-weight:950;text-align:center;margin-bottom:16px}.ss-v11-diagram-nodes{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.ss-v11-diagram-node{padding:10px 13px;border-radius:14px;background:var(--ss-surface);border:1px solid var(--ss-border);font-weight:820}.ss-v11-studio-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}.ss-v11-enrichment-list{margin-top:18px}.ss-v11-enrichment-item{text-decoration:none;color:inherit;display:flex;justify-content:space-between;align-items:center;gap:12px;transition:.2s}.ss-v11-enrichment-item:hover{transform:translateY(-2px);border-color:rgba(108,77,246,.28)}.ss-v11-enrichment-item h3{margin:9px 0 4px}.ss-v11-enrichment-item p{margin:0;color:var(--ss-muted)}
@media(max-width:900px){.ss-v11-vocab-grid{grid-template-columns:repeat(2,1fr)}.ss-v11-exam-grid{grid-template-columns:1fr}.ss-v11-studio-head{align-items:flex-start;flex-direction:column}}
@media(max-width:650px){.ss-v11-why-grid,.ss-v11-mistake-grid,.ss-v11-vocab-grid{grid-template-columns:1fr}.ss-v11-deep-step{grid-template-columns:42px 1fr}.ss-v11-deep-step .n{width:40px;height:40px}.ss-v11-depth-strip{align-items:flex-start;flex-direction:column}}